# # Data product developed by Dr. E. Thiemann from the # Laboratory for Atmospheric and Space Physics, Boulder, Colorado # in the frame of the PROBA2 guest investigator program. # # Please address your questions to E. Thiemann (thiemann@lasp.colorado.edu) and # to the LYRA Principal Investigator M. Dominique (marie.dominique@oma.be) # # PROBA2 data products are open to all. # Users should however refer to the following paper: http://arxiv.org/abs/1708.08833 # and acknowledge the instrument according to the rules described # at http://proba2.oma.be/data/termsOfUse in their papers and presentations # # Website reference http://proba2.oma.be/lyra/data/EarthAtmosphere/ # # Description: # Summed neutral N2 and O number density profiles, spanning altitudes between 150 and 400 km # retrieved from LYRA data acquired during occultations by the unit 3 (backup unit) zirconium # channel (bandpass: 1-2 nm + 6-20 nm). # # Radial distance is the distance from the center of Earth expressed in km to which the density corresponds. # Density O-N2 provides the summed number density of neutral O and N2 in units of radial distance and cm^-3. # The systematic error is a signed value (asymmetric) in fractional units and is primarily from the error made by # assuming that the absorption cross-sections of O and N2 are equal; a secondary source of systematic error is # from using a single-scale height atmosphere in the reference atmosphere used by the retrieval algorithm. # The random error is an unsigned value (to be applied symmetrically to the measurement) in fractional # units and gathers the uncertainties from solar spectra, solar variability and measurement noise. # Both uncertainties are described in http://arxiv.org/abs/1708.08833. # The Longitude and Latitude (in degrees) columns refer to the tangential point along the # line-of-sight, where most of the absorption occurs. # # Scale height = 37.030351 km # Date (UTC) = 2015-12-25T09:22:44.408 # Date (julian) = 2457381.89079176 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6483.3861 1.1249644e+11 0.020694708 0.027273319 -19.746966 50.312600 6485.3546 1.0290113e+11 0.025619572 0.027866933 -19.843091 50.230206 6487.3232 9.0906178e+10 0.031277489 0.028460547 -19.937460 50.147812 6489.2917 8.6494382e+10 0.035593191 0.029054161 -20.030153 50.065419 6491.2603 8.7465556e+10 0.038737831 0.029647775 -20.122846 49.983026 6493.2289 7.9201801e+10 0.043083310 0.030241389 -20.215547 49.900625 6495.1974 7.7880380e+10 0.046496287 0.030835002 -20.308253 49.818220 6497.1660 7.0386211e+10 0.050382803 0.031428616 -20.400958 49.735814 6499.1345 5.9754806e+10 0.054046437 0.032022230 -20.493655 49.653417 6501.1031 5.2876890e+10 0.056815848 0.032615844 -20.586348 49.571024 6503.0717 4.7423350e+10 0.058898119 0.033209458 -20.679042 49.488631 6505.0402 4.3342790e+10 0.060765574 0.033803072 -20.769078 49.406237 6507.0088 4.1047884e+10 0.063773280 0.034396685 -20.858337 49.323843 6508.9773 3.7674494e+10 0.067878359 0.034990299 -20.947597 49.241448 6510.9459 3.5144224e+10 0.074878206 0.035583913 -21.036857 49.159055 6512.9144 3.3044262e+10 0.085507433 0.036177527 -21.126117 49.076662 6514.8830 3.0577265e+10 0.099225575 0.036771141 -21.215377 48.994269 6516.8516 2.9328098e+10 0.11750926 0.037364755 -21.304648 48.908609 6518.8201 2.7475679e+10 0.13585696 0.037958369 -21.393920 48.822770 6520.7887 2.5146790e+10 0.15185249 0.038551982 -21.483069 48.737055 6522.7572 2.3713934e+10 0.16291748 0.039115545 -21.568896 48.654660 6524.7258 2.2205678e+10 0.16807676 0.039684806 -21.654723 48.572266 6526.6944 2.0724997e+10 0.17109401 0.040396046 -21.740550 48.489872 6528.6629 1.9661132e+10 0.17349230 0.041968381 -21.826377 48.407477 6530.6315 1.8106821e+10 0.17546825 0.044712761 -21.912204 48.325082 6532.6000 1.6750506e+10 0.17748696 0.047185464 -21.998031 48.242688 6534.5686 1.5728836e+10 0.17762396 0.048103617 -22.083858 48.160295 6536.5372 1.4589513e+10 0.17656189 0.048271113 -22.169685 48.077902 6538.5057 1.3559489e+10 0.17628470 0.049402940 -22.255515 47.995505 6540.4743 1.2571701e+10 0.17566344 0.051078164 -22.341354 47.913100 6542.4428 1.1649953e+10 0.17396729 0.051170364 -22.427192 47.830694 6544.4114 1.0859580e+10 0.17249122 0.051978082 -22.511705 47.746972 6546.3800 1.0118830e+10 0.17079180 0.052777170 -22.594099 47.661145 6548.3485 9.3483880e+09 0.16961987 0.053771725 -22.676493 47.575318 6550.3171 8.6219804e+09 0.16851445 0.055064752 -22.758886 47.491112 6552.2856 7.8446395e+09 0.16718839 0.055514872 -22.841280 47.408719 6554.2542 7.1982460e+09 0.16505631 0.054837714 -22.923674 47.326326 6556.2228 6.7077586e+09 0.16278197 0.053980377 -23.004149 47.243932 6558.1913 6.3055084e+09 0.16052914 0.053076282 -23.083110 47.161537 6560.1599 6.0246816e+09 0.15741495 0.052130163 -23.162071 47.079143 6562.1284 5.6536784e+09 0.15397825 0.050757696 -23.243258 46.994523 6564.0970 5.2986012e+09 0.15037560 0.048727641 -23.325663 46.908684 6566.0656 4.9340920e+09 0.14785427 0.047145802 -23.408068 46.822846 6568.0341 4.6234889e+09 0.14634177 0.045740307 -23.487945 46.739536 6570.0027 4.3612523e+09 0.14493853 0.044916403 -23.566906 46.657142 6571.9712 4.0952335e+09 0.14324992 0.044238014 -23.645866 46.574749 6573.9398 3.8492975e+09 0.14092843 0.042903324 -23.724827 46.492355 6575.9083 3.6035054e+09 0.13903108 0.041463350 -23.803788 46.409961 6577.8769 3.4111255e+09 0.13689762 0.038842965 -23.882748 46.327566 6579.8455 3.2268389e+09 0.13450192 0.036605707 -23.958592 46.242054 6581.8140 3.0491737e+09 0.13218743 0.035350111 -24.034120 46.156227 6583.7826 2.8878951e+09 0.12993569 0.034625557 -24.109664 46.070417 6585.7511 2.7328238e+09 0.12777115 0.033370251 -24.188603 45.987980 6587.7197 2.5964882e+09 0.12590317 0.033317828 -24.267574 45.905576 6589.6883 2.4714299e+09 0.12348010 0.031680527 -24.346260 45.823173 6591.6568 2.3407246e+09 0.12062496 0.028460763 -24.421788 45.740778 6593.6254 2.2196104e+09 0.11794271 0.026520806 -24.497315 45.658384 6595.5939 2.1025952e+09 0.11489327 0.025685164 -24.572259 45.575406 6597.5625 1.9917216e+09 0.11220255 0.025545224 -24.644354 45.489579 6599.5311 1.8898427e+09 0.11021960 0.024961671 -24.716449 45.403752 6601.4996 1.7873452e+09 0.10918938 0.027280982 -24.789429 45.318805 6603.4682 1.6981063e+09 0.10710663 0.026386114 -24.864967 45.236399 6605.4367 1.6123308e+09 0.10580174 0.027031431 -24.940504 45.153994 6607.4053 1.5333464e+09 0.10372177 0.024906687 -25.014855 45.071593 6609.3739 1.4582600e+09 0.10069802 0.023816984 -25.086950 44.989200 6611.3424 1.3838247e+09 0.098229071 0.024740096 -25.159045 44.906806 6613.3110 1.3113173e+09 0.097520834 0.023687688 -25.231140 44.822930 6615.2795 1.2457558e+09 0.096459055 0.023260132 -25.303234 44.737103 6617.2481 1.1900372e+09 0.095424019 0.023521504 -25.375328 44.651276 6619.2167 1.1320739e+09 0.094848135 0.024578189 -25.447423 44.567231 6621.1852 1.0766725e+09 0.094108848 0.025028057 -25.519518 44.484836 6623.1538 1.0191535e+09 0.092787724 0.024548796 -25.591613 44.402442 6625.1223 9.6749596e+08 0.091578569 0.025543581 -25.663714 44.317960 6627.0909 9.2549074e+08 0.089547951 0.025351920 -25.735818 44.232121 6629.0594 8.7970859e+08 0.088526664 0.026098356 -25.807921 44.146283 6631.0280 8.3817664e+08 0.086861666 0.025933611 -25.877637 44.062835 6632.9966 7.9610480e+08 0.085628455 0.026151842 -25.946299 43.980442 6634.9651 7.6107398e+08 0.084126174 0.026397244 -26.014961 43.898049 6636.9337 7.2370421e+08 0.082545351 0.026187164 -26.090326 43.804595 6638.9022 6.7996015e+08 0.081449085 0.025632334 -26.167571 43.708038 6640.8708 6.3705145e+08 0.081958741 0.025164108 -26.243169 43.614197 6642.8394 5.9928756e+08 0.081518965 0.025186045 -26.311831 43.531803 6644.8079 5.6628730e+08 0.080414718 0.025430925 -26.380494 43.449408 6646.7765 5.3894436e+08 0.079104668 0.026322080 -26.449155 43.367013 6648.7450 5.1403073e+08 0.077798382 0.027463018 -26.517816 43.284620 6650.7136 4.8970064e+08 0.077284837 0.026418601 -26.586478 43.202227 6652.6822 4.7277180e+08 0.076849465 0.027438211 -26.655142 43.118573 6654.6507 4.4976616e+08 0.076031651 0.027759013 -26.723813 43.032735 6656.6193 4.2678404e+08 0.074501042 0.028566956 -26.792484 42.946896 6658.5878 4.0932915e+08 0.073277833 0.031103623 -26.859593 42.862620 6660.5564 3.8903901e+08 0.072222375 0.032131737 -26.924822 42.780226 6662.5250 3.7247341e+08 0.071129648 0.032749739 -26.990050 42.697832 6664.4935 3.5266649e+08 0.070335812 0.030400330 -27.059689 42.607777 6666.4621 3.3069694e+08 0.070384646 0.026998636 -27.133072 42.511220 6668.4306 3.1720375e+08 0.069538478 0.027851857 -27.206455 42.414663 6670.3992 3.0230505e+08 0.069346411 0.027143692 -27.272078 42.331584 6672.3678 2.8357890e+08 0.069158153 0.027092756 -27.337306 42.249190 6674.3363 2.7083943e+08 0.068187682 0.029238494 -27.402535 42.166795 6676.3049 2.5165791e+08 0.066178190 0.031910213 -27.467773 42.084391 6678.2734 2.3995614e+08 0.065364862 0.030753730 -27.533010 42.001987 6680.2420 2.3121613e+08 0.065685095 0.029493672 -27.597812 41.919150 6682.2106 2.2006844e+08 0.066267860 0.030585412 -27.659608 41.833324 6684.1791 2.1395828e+08 0.066270238 0.032663181 -27.721403 41.747497 6686.1477 2.0566229e+08 0.065514329 0.033847001 -27.785673 41.660203 6688.1162 1.9379972e+08 0.063163891 0.033812020 -27.859056 41.567507 6690.0848 1.7954717e+08 0.061411752 0.033106147 -27.932439 41.474811 6692.0533 1.6510154e+08 0.060393051 0.032703379 -27.998587 41.386405 6694.0219 1.5764639e+08 0.059430965 0.031230323 -28.060382 41.300578 6695.9905 1.5392079e+08 0.059346448 0.029677537 -28.122178 41.214751 6697.9590 1.4997990e+08 0.058641949 0.030212632 -28.189471 41.124038 6699.9276 1.4081552e+08 0.057266521 0.030734537 -28.258992 41.031344 6701.8961 1.2482973e+08 0.055732425 0.032724344 -28.327146 40.939491 6703.8647 1.1719698e+08 0.056069893 0.035838999 -28.385509 40.853664 6705.8333 1.1013201e+08 0.056153976 0.038149980 -28.443871 40.767837 6707.8018 1.0487582e+08 0.055882141 0.040071966 -28.502955 40.682728 6709.7704 1.0013178e+08 0.054959221 0.040642543 -28.564759 40.600322 6711.7389 93516114. 0.053087024 0.041532945 -28.626563 40.517916 6713.7075 92853611. 0.051172016 0.046245501 -28.690660 40.432453 6715.6761 89666466. 0.049536270 0.048070043 -28.760181 40.339759 6717.6446 83357636. 0.047539803 0.049834396 -28.829702 40.247066 6719.6132 78163278. 0.046025603 0.050787275 -28.891322 40.159234 6721.5817 73140962. 0.045217538 0.050479179 -28.949685 40.073407 6723.5503 64505085. 0.037944924 0.049675854 -29.008047 39.987580 6725.5189 60101628. 0.037938640 0.041251915 -29.072211 39.896292 6729.4560 54315109. 0.047557271 0.040741508 -29.203529 39.710901